Zivver Office Plugin 6.21.2

Secure email transfer and file sharing

  • By Zivver B.V.
  • Proprietary
  • Updated May 26, 2026
Download for Windows

About Zivver Office Plugin

Secure email transfer and file sharing

What's new in 6.21.2

Release highlights

Bug fixes

- ENG-15250 - Link to webapp placed in Zivver message sent from a shared mailbox is incorrect and
results in a "Could not find conversation" warning.
- ENG-15258 - Table formatting is not properly displayed for Zivver messages that are sent using the
Zivver WebApp.
- ENG-16000 - In some cases, Outlook can crash when opening a Zivver message, with an
"IndexOutOfRangeException" error in the CSS parser.
- ENG-16300 - Error message is displayed when repeatedly opening or renaming msg files.
- ENG-17601 - The Zivver Office Plugin causes typing delays and skipped characters when paired with
the NetDocuments Add-in.
- ENG-17687 - Replying to a Zivver conversation moves the CC recipients to the TO field.
- ENG-17841 - Print Message functionality wraps lines incorrectly in Outlook Classic.
- ENG-18538 - Made logging less verbose.

Known issues

- ENG-8502 - The sign sidebar spills over the right side of the screen when the display scale is set
to 150% or higher.
- ENG-8509 - The font in Zivver messages sent using Plugin Assisted Mail Submission (PAMS) may
appear blurry.
- ENG-13256 - Inline images disappear when forwarding Zivver messages unsecurely.
- ENG-13662 - Error when opening .OFT file after saving draft email with active Zivver plugin.
- ENG-14504 - Activating Zivver breaks RTF message formatting.
Workaround: Choose HTML as default formatting or enable Zivver before composing the email.
- ENG-14881 - Sometimes a reply to a sent PAMS message can result in a SendAsDeniedException.
- ENG-15414 - eSignatures: Handwritten signatures shifts the assigned fields.
- ENG-15996 - Outlook is freezing when accepting internal calendar invites.
- ENG-16133 - When changing the personal access code within the Zivver plugin, this change is not
reflected in the preview until Outlook is restarted.
- ENG-16631 - When replying to an insecure message in a new window (pop-out), the Zivver eSignatures
button is available, but not functional.
- ENG-16978 - Zivver messages sent with the Zivver OWA add-in cannot be viewed in the Sent Items of
the (classic) Outlook desktop application.
- ENG-17374 - Switiching between folders makes Outlook unresponsive when Zivver plugin is installed.
- ENG-17476 - The Zivver Office Plugin selects the wrong Sent Items folder when sending a Zivver
email.
- ENG-17568 - Attachments order changes to Alphabetical order when using the Zivver Office Plugin. …

Full release notes »

Technical details

PublisherZivver B.V.
Version6.21.2
Release date2026-05-26
LicenseProprietary
Installer typewix
Architecturex86
Package IDZivver.ZivverOfficePlugin

Install Zivver Office Plugin from the command line

Install with Windows Package Manager
winget install --id=Zivver.ZivverOfficePlugin -e
Update to the latest version
winget upgrade --id=Zivver.ZivverOfficePlugin -e
Uninstall
winget uninstall --id=Zivver.ZivverOfficePlugin -e
Silent install with the offline installer
msiexec /i "Zivver.OfficePlugin.Installer-6.21.2.msi" /quiet /norestart
Uninstall the MSI package
msiexec /x {209BED11-E1A8-4246-BEE5-EF6BF1ED7303} /quiet

emailmailsecurity

Zivver Office Plugin version history

6.21.0 Feb 3, 2026
6.10.2

Frequently asked questions

Is Zivver Office Plugin free?

Zivver Office Plugin is proprietary software from Zivver B.V.. Check the publisher's license terms for pricing and usage rights.

What is the latest version of Zivver Office Plugin?

The latest version is 6.21.2, released on May 26, 2026.

Is it safe to download Zivver Office Plugin?

The download button links to the official installer published on downloads.zivver.com, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 21a7e356ca588c9c825898e60c3ebc9f72c56cd1305779436812e4f4559af7f6.

Which Windows versions does Zivver Office Plugin support?

Zivver Office Plugin runs on Windows and is available for 32-bit (x86) systems.

How do I install Zivver Office Plugin silently?

Run the offline installer with msiexec /i "Zivver.OfficePlugin.Installer-6.21.2.msi" /quiet /norestart, or install it with Windows Package Manager: winget install --id=Zivver.ZivverOfficePlugin -e --silent.

How do I uninstall Zivver Office Plugin?

Open Settings › Apps › Installed apps, find Zivver Office Plugin and select Uninstall. From the command line, run winget uninstall --id=Zivver.ZivverOfficePlugin -e.